Administrative Guidance Manual - Center for Dirt and Gravel Road ...

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6. Wearing Course Materials Wearing surface materials must have had suitable testing for durability, hardness and pH. Wearing course materials must meet the following criteria in order to be considered an eligible expense for the Dirt and Gravel Road Maintenance Program • Durability LA Abrasion Less than 40% passing • pH Soil pH pH Range 6.5 – 12.45 Materials such as fieldstones and native materials gathered in the immediate area for headwall/ endwall construction and road sub-base do not require certified lab testing. Caution is advised because some native rock has a potential to leach acid. Although usually encouraged, the conservation district may deny use of collected or native material such as plants or stones if the conservation district has information to indicate environmental harm will result from their use. 7. Driving Surface Aggregate – DSA It is not required that limestone be used for the driving surface aggregate, but the material that is used as a wearing surface must meet the durability, hardness, pH and size criteria of driving surface aggregate. The SCC will maintain a list of Driving Surface Aggregate suppliers. Driving surface aggregate is not required for every project but it is recommended where needed or appropriate. Additional information about DSA is found at certification, specification and placement. The DSA supplier must provide an aggregate certification sheet for each job to the municipal official in charge of the project. The municipality may require additional certifications if there is an interruption in delivery or some other change has taken place in the aggregate supply. The sample on which the certification is based must not be older than thirty days of the date of signature and delivery. Driving Surface Aggregate (DSA) can be manufactured from a single parent rock type that has a pH of between 6.0 and 12.45, an L.A. Abrasion rating of less than 40%, contains less than 5% clay and will meet the following size criteria: 36 Version 6.00 March 3, 2005
Sieve Size Specification Range % Passing 1.5” 100 0.75” 65 – 90 #4 30 – 65 #16 15 – 30 #200 10 – 20 DSA may also consist of a blend of native rock materials meeting the above size criteria and all components having a pH of between 6.0 and 12.45, an L.A. Abrasion rating of less than 40% and a clay content of less than 5%. All materials used to make DSA must be free of vegetable or organic matter, glassy material, reactive chert, gypsum, iron sulfide, or other reactive sulfide minerals, amorphous silica, hydrated iron oxide and shale. The use of fly ash, bottom ash, metallurgical slag, foundry sand, coke breeze, red dog, crushed concrete, coal waste, crushed glass, shredded plastic or crumb rubber may not be used in the manufacture of DSA. Driving surface materials that contain these materials must be tested and approved in a case-by-case basis by the SCC. 8. Non Labeled Commercial Product Testing Protocols Testing for commercial products is divided into “solids” and “aqueous” protocols. Solid Products refer to any three dimensional material in a solid state. Types of solid products include natural products such as stone, and synthetic products such as geotextile separation fabric. This excludes aqueous materials and the solids contained in emulsions. Aqueous Products refer to any product applied as a liquid. Types of liquid products include solutions, suspensions and emulsions Before an aqueous product can be approved for use in the Dirt and Gravel Road maintenance Program it must undergo toxicity testing according to EPA protocol at a laboratory certified by the EPA. The test results are to be interpreted against Pennsylvania’s Clean Stream Law and that interpretation is the basis of whether or not the product is acceptable. 9. Required Tests 37 Version 6.00 March 3, 2005
Page 1 and 2: Index ADMINISTRATIVE MANUAL DIRT AN
Page 3 and 4: H. Stream Assessment and Monitoring
Page 5 and 6: Intended Audience This manual is in
Page 7 and 8: statement of policy are determined
Page 9 and 10: I. State Conservation Commission (S
Page 11 and 12: 3. Conservation District Field Repr
Page 13 and 14: 9. QA/QC Review and Comment The con
Page 15 and 16: C. Distribution of Advance Working
Page 17 and 18: The 10% of each county’s allocati
Page 19 and 20: L. Program Re-Admittance A conserva
Page 21 and 22: The GIS developed for the Dirt and
Page 23 and 24: IV. Quality Assurance Board (QAB) A
Page 25 and 26: Maintenance Program require distric
Page 27 and 28: application for its product. A Mate
Page 29 and 30: V. Program Participants A. Environm
Page 31 and 32: Penn-DOT is eligible for supplement
Page 33 and 34: necessary to complete a project wit
Page 35: 3. Commercial Products Commercial p
Page 39 and 40: J. Location Map The application mus
Page 41 and 42: Activities exempt from Phase II reg
Page 43 and 44: wild plants. Some species also are
Page 45 and 46: I. Local Ordinances Counties and lo
Page 47 and 48: payment of funds is referred to as
Page 49 and 50: Trail Road Intersections In many ca
Page 51 and 52: Examples This section contains exam
Page 53 and 54: Index Additional Tests for Aqueous
Page 55: Program Notification, 25 Program Pa

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